how to fix P0171 lean condition code on Ram 1500 DT (2019-Present)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool completely before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, vacuum gauge, smoke machine.
• Sub-steps:
  1. Visually inspect all air intake hoses and connections for cracks or loose fittings.
  2. Use a smoke machine to identify any vacuum leaks in the intake system.
  3. Tighten or replace any damaged hoses or clamps as necessary.

3. Check and Replace Fuel Filter

• Tools Required: Fuel line disconnect tool, wrench set.
• Sub-steps:
  1. Locate the fuel filter and relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
  2. Disconnect the fuel lines using a fuel line disconnect tool and remove the old fuel filter.
  3. Install the new fuel filter, ensuring correct orientation and secure connections.

4. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver set.
• Sub-steps:
  1. Disconnect the MAF sensor connector and remove the sensor from the air intake duct.
  2. Clean the sensor using MAF sensor cleaner, avoiding contact with the sensing element.
  3. Allow it to dry, then reinstall the sensor and reconnect the electrical connector.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaning kit, socket set.
• Sub-steps:
  1. Remove the fuel injectors from the intake manifold after relieving fuel pressure.
  2. Use an injector cleaning kit to clean the fuel injectors according to the manufacturer's instructions.
  3. Reinstall the fuel injectors and ensure they are seated properly.